ICD-10-CM > S00-T88 > S40-S49 > S46 > S46.9 > S46.99 S46.99 Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level Non-Billable/Non-Specific Codes S46.991Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, right armS46.991A..., initial encounterS46.991D..., subsequent encounterS46.991S..., sequelaS46.992Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, left armS46.992A..., initial encounterS46.992D..., subsequent encounterS46.992S..., sequelaS46.999Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, unspecified armS46.999A..., initial encounterS46.999D..., subsequent encounterS46.999S..., sequela